Injector for portable forges.



No. 649,672. I Patented May l5, I900. H. E. PARSON.

INJECTOR FOB PORTABLE FORGES.

(Application filed Nov. 8, 1898. Renewed Sept. 26, 1899.)

(No Model.)

WITNESSES: 9 M/VENTUS A T TOR/V m: News awks on mnro Lmmu wnswmamu. u.c.

UNTTiEn STATES PATENT ()FFICE.

HENRY E. PARSON, OF NElV YORK, N. Y.

lNJECTOR FOR PORTABLE FORGES.

SPECIFICATION forming part of Letters Patent No. 649,672, dated May 15,1900. Application filed November 3, 1898. Renewed September 26, 1899.Serial No. 731,768. (No model.)

To (tZZ whom it may concern:

Beit known that I, HENRY E. PARSON, a citi zen of the United States,residing in the city of New York, borough of Brooklyn, and State of NewYork, have invented certain new and useful Improvements in Injectors forPortable Forges, of which the following is a specification.

This invention relates to injectors for portable forges; and the objectof the same is to provide the injector with suitable means oflubrication, so that the parts of the same can be easily turned one uponthe other.

The invention consists of an injector which comprises a nozzle providedwith an internally-screw-threaded boss, having a flange between the bossand the passage through the nozzle, an air tubeinserted through theopenin g in said flange and being externally screwthreaded, aninternally and exteriorly screwthreaded gland-nut for engaging thescrewthreads of the air-tube and said boss, and a packing of plumbagosaturated with oil and held between said flange and said gland-nut, aswill be hereinafter particularly described and then claimed.

In the accompanying drawings, Figure 1 is a side elevation of a portableforge to which my injector is applicable. Fig. 2 is an enlarged verticaltransverse section of the coalbox of the forge and of the injector. Fig.3 is a still further enlarged vertical section of the injector, and Fig.4 is a rear elevation of the same.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A indicates the frame, and B the c0al-box, ofa portable forge to which my injector is adapted to be applied. Thecoal-box has a dependingfcenter neck 0, provided with aradially-extending blast-tube D.

E is a diaphragm in the bottom of the coalbox, which is received in arecess 6 at the upper end of the neck 0. The lowerend of the neck 0 isclosed in any suitable manner, as by screw-cap 0', Fig. 1, or by plate 0Fig. 2. The plate O is fastened by means of screwboltfand nutj".

The injector G is inserted in the flaring outer end of the blast-tube D.The injector consists of a nozzle g, the inwardly-extend ing end ofwhich tapers, while the outer end is formed with an internallyscrew-threaded boss 9', the nozzle also having a downwardlyeXtendinginternally-screw-threaded neck 9 which receives the screw-threaded upperend of a valved pipe H, preferably connected with a supply of air underpressure. An internal flange g is arranged in the nozzle, so that theair forced through the nozzle from the pipe H is caused to pass throughthe vertical passage g and the horizontal passage 9'' in said nozzle.

The tapering end of an air-tube I extends through the opening in theflange g and projects into the tapering internal end of the passage g sothat an annular passage 1 is formed between the said parts, throughwhich the air from pipe H passes. This space can be made larger orsmaller, accordin to requirements, by means of a gland-nutiwhicli isboth internally and exteriorly screwthreaded, so as to engage with theinterior screw-thread of the boss g and with the exterior screw threadadjacent to the flaring mouthpiecet'of said air-tube. The gland-nut J isprovided with diametrically opposite han dles j, so that the same can begrasped by the hand for turning said nut and adjusting the air-tubeaccordingly. In such screw-connected parts it is often very difficult toturn the one upon the other; but in the present invention a lubricatingmeans for the screwthreads is provided, which means is confined in theinjector itself. This consists, prefer ably, of a body of plumbago 7t,saturated with a suitable lubricating-oil and made in the form of apacking-ring,which is placed around the air -tube Iand confined betweenthe flange and the inner end of the gland-nut. By turning the gland-nutin and squeezing the plumbago packing 7a a small amount of oil is forcedout of the same and'into the joints adjacent thereto. The neck 9 of theinjector extends downwardly and is secured onto the upper end of pipe H,which projects upwardly through a suitable opening in the outer end ofthe blast-tube D, and the nozzle g projects inwardly in said blast-tube,so that it is axially in line with the passage there through Inoperation air from a suitable supply is caused to pass through the pipeII and in passing through the annular space g and the passage 9 in thenozzle to cause an additional supply of air to be sucked in through theairtnbe I. The jet of air forced through the nozzle then also sucks inan additional supply through the mouth of the blast-tube D, so that theaugmented blast is forced into the neck 0 upwardly through theperforated diaphragm E and into the coal-box B, so as to cause the coalstherein to burn more freely, as Well as to hasten the heating of themetal in the forge.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- In an injector, the combination of the noz- 210 ofthe same provided with an internally- HENRY E. PARSON.

\Vitnesses:

PAUL GOEPEL, GEO. L. WHEELOOK.

